Relay



` Febe 2, 11926. r 1511;-368

^ H. CHlREIX RELAY Filed August 29, 1921 2 Shefatsf-Shee'rl 1 nvanoz. HENR HR ma his H. CHIREX RELAY Filed August 29; 19mV 2 shee/tsfsneen 2 Snom/woz HENRI CHSREIX rentx'in the first circuit. This second osci1lation frequency has only a duration that is equivalent to the time the contact takes to close, the effect of such closure being, to pro-- voke the generation at the first of the two frequencies ofthe system.

' My invention is illustrated by Way of example in the accompanying drawing which, c t

Fig. 1 shows an arrangement according to my invention; t

Fig. 2 shows a modification thereof;

Fig. 8 shows an arrangement according' to my invention adapted to cause the energization of a bell or the like; t

Fig. 4 shows an arrangement of my invention adapted to operate as a signal recorder and l l Fig. 5 showsa record of signals produced by the apparatus shown in Fig. 4.

Fig. 1 is a diagram illustratin one embodiment of the invention. In t is figure, 1 is a `vacuuni tube serving as an oscillation generator. The p'latecircuit of this tube comprises two oscillating circuits 2 and 3 that are coupled, respectively, with the grid circuit through the mutual induction coils 4 and 5, on one hand, and through 6 and?, on the other hand. The oscillating circuits 2 and 3 include also variable condensers 8 and 9 and ammeters ltltand 11 the operation of which is adapted to cause the closure or opening of .the external circuits. Only the animeter 10 is shown in the drawing as arranged to cause the closure of such circuit, i. e. the ground connection of the oscillating circuit 2 provided for the automatic striking of the oscillatinons corresponding to the idle position of the apparatus. Through the agency of the coil 13, a microphone 12 when actuated by the voice impressions causes the generation of oscillations corresponding to the operating condition of the apparatus.

The constants of the generator tube oscillation circuit are so chosen that the generator will produce one of two radically differ ent frequencies with equal facility. The circuit 2 is timed to one 'of these frequencies andthe circuit 3 to the other. When .the generator is oscillating at one frequency, therefore, there will be a heavy current circulating in circuit 2 and no appreciable cur 'rent in circuit 3 and when the generator is 'oscillating at Vthe other frequency there will be a heavy current circulating In circuit and practically nonc'iu circuit 2Q The generator will be self-excited by the action of either the coupling Llf--i or the coupling (3@7, depending on the oscillation frequency. lf oscillations corresponding to the. frequency of circuit 2 are started the generator will be self-excited by the coupling` 4--5 and these oscillations corresponding Ato the frequency of circuit 2 will be sustained. Tt, however, the microphone l2 begins Ato vibrate its resistance will undergo large instantaneous changcsand, as it is coupled to the circuit 2 through the coupling /i-i, these variations in resistance will serve to change the inductance and apparent resistance of circuit 2. These changes are sufficient. to prevent the self-excited generator freni fui. ther sustaining oscillations correspiinding to the frequency of circuit 2. They are not sutlicienthowever, to prevent the generator from acting as a selfexcited generator of oscillations corresponding to the frequency of circuit 3. The tube will, therefore, cease to operate as a selfexcited generator of oscillations of the first frequency and wilt start to operate as a self-excited generator for oscillations of the second frequenpy.

The changes in the resistance of the nii crophone have no appreciable effect on the coupling 6 7, as it will be noted that the coils 5 and 7 are in series in the grid circuit of the tube and the impede. ee of the tube between its grid and lanicnt is snfciently high to prevent any appreciable` current tloiv in this circuit. The action of the coupling 6--7 as means for self-exciting the tube is,

therefore, independent of any operation of' the microphone.

As soon as the oscillations die out in circuit 2, the needle of the aniineter Al0 will move to its zero point and close a circuit placing a ground on circuit 2. The ground connection has the effect of placing a condenser in parallel with the condensers 8 and 9. fThe constants of the generator plate filamentcircuit are, thus, again changed. so that the conditions of self-excitation of he generator are no longer satisfied for the frequency of circuit 3, but continue to be satistied for self-excitation of the generator for oscillations corresponding to the frequency of circuit; 2. rl`he tube will, then, again start to oscillate at the frequency of circuit 2. a large current will again start to flow in circuit 2 and the needle of the ammeter will open the ground connection. Then oscillations will continue until the diaphragm of the microphone again starts to vibrate.

A capacity, such as the one shown at 1t, may be provided to useful advantagebctween the terminals of the coil 7. The

purpose of this capacity is to facilitate the lie platebatei'y clepending o1i.wlietliei the tuloe oscillaes at the rs or s scuri l quency. if constructed in this meneer, Elie appaiatus may be put "co Various uses paI'tiCulai-i.,Y as e Sigfualingsysiem 'oimfiieless telegiaphy. The arrangement shown in Fig.- 3 ci' any analogous ariengemen'i; may be used for such purpose: 'lie miciophone 12 is coupled with the telephone receiver of a Wireless telegraph receiving eye tem (not shown) tuned iro che signi-ils io 'ce i'eceive. For the purpose of providing protection against grinders or eimosplieic fiisuifbances, the operation may poceefl in 'the folloiiriug manner;

The Sending of tlie firs ein lle sending; station actuaes the. ooiiec. ppiifetus l0,l The letter tliougli coii'gacs iu,

loh

16, closeslthe circuit of a iist relay 23 which elmeg the rotafion of Wheei 1'2" tolled by e clockwork. rilliis Wheel wili immediafelyopen the ciieui; of elle ifs'; ie lay through movement of coniluciiig i8 away from coi'isacts miel 20., aiidrwi close after e pieeteiiiiiiiefi time a very slioi'i time tliiougli comme 2l e, 22 and scemi' i8, the ciieui, o? e seeoiicl. ley 24 tl'ia, is also umler die coiziol of' contact eppeieauM el, iliis 'veijy lime? e seconci signal is seni', from the seniiig 5555etiozi, lie second relay will loe may in iufm actuate, e. g. e, ifi-ell. i' cleeirefl :for the sake of greaer seeui'ity7 relay may iee'a, seceml'wlieel wli a i'lhiid ciicui' upon the epii'eioii o'; i, L. deteijmiiie. time coi'i'espoiiding to ses. ing of a tliii signal fiom alie es?" "f sie@ tiem ebs. H the signals received.

of lierteleplicnedo no?, oilow the Sequencel the'indicatiieig eppziieiue will nei", operate. 'v l This ariangement may also loe used register the signals- In this @aise Sliema in Fig. 4., the Contact eppziia'ue shoui be cillaiou requeeoy.

si ii'mis mimi, tlm (leali sili leslie iil e 'sume "olienonieiicn Finally, lie Ssylus Wil1 im plui'eliy of complete cse" the stylue pei-foune only @ne o2 ivm plete oscillations dwing; liis fi record suoli :is would loe neoeilbjf my 'M apparatus Qliown in Fig. Si. l

Thus for., ie assumfvion me that ille :icmiiug meel-um miery r(mei/ei"7 ille opei'ziieu may ce ce algo if im alternating eurieu ieiziy l'zi this euse, allei'iia'ziug plied between the enel. die lilii lie lifeeeleci'efle 'i1- nllie mim'oplimie my apizu'iius that ci a 'variable re e i'esult ci iiis, ing circuit. is uio-dined imc eied. @bidons-lj@ l'ie eiieiizi iii filiis a -fiieci eu 1 ige* tion to one of said sections adapted to be interrupted hy said contact means.

4. A relay tor electric currents compris ing an oscillation rgenerator having an outu put ci reuit comprising,r two sections tuned to di Terent Jfrequencies, means actuated by said' currents tor suppressing one of Said frequencies and 'causing the generation of the other frequency in the other section, and contact means actuated by the change in the currents in one ot' said sections for restriking the first frequency.

A relay for electric currents comprising an oscillation generator having two generating frequencies and means responsive to speech, tor suppressing one of said frequencies and liberating the other in accordance with said speech.

6. A relay for electric currents comprising an oscillation generator having two tuned currents corresponding to an idle and an operating frequency, signalling means for suppressing said idle frequency and liberating the operating frequency in accordance with said signals and means for automatically restoring the generator to liberate the idle frequency.

7. A relay for electric currents comprising an Oscillation generator having a circuit tuned to respond to either an idle or an operating frequency, means actuated by said currents for suppressing one ot4 said trequencies and liberating the other, contact means adapted to'be actuated by said change in the currents generated, means for periodically restoring the generation ot' the idle frequency and indicating means actuated by the Contact means. l

S. A relay for electric currents comprising an oscillation generator having two gen-- erating frequencies, a source of power` said generator being adapted to generate either of said frequencies in accordance with the power supplied by said source, and signal ling means adapted to be operated by said currents tor varying the power supplied to the generator, thereby liberating the desired frequency.

9. relay for electric currents, comprisinga 'acuum tube generator, a. batteryvcon nected thereto, said generator having cir cuits adapted to generate either of two frequencies, depending on the power supplied to the generator, and a microphone actuated by said currents adapted to change the power supplied by the battery.

HENRI cinema 

